Finding the Fourth Proportional to 129,281.20, 193,921.80 and 94,289.20
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Solution
The fourth proportional to 129,281.20, 193,921.80 and 94,289.20 is: 141,433.80
Step by Step Solution
- Step 1: Write the proportion equation
129,281.20 : 193,921.80 = 94,289.20 : x - Step 2: Convert to fraction form
129,281.20/193,921.80 = 94,289.20/x - Step 3: Cross multiply
129,281.20x = 193,921.80 × 94,289.20 - Step 4: Simplify right side
129,281.20x = 18,284,731,384.56 - Step 5: Solve for x
x = 18,284,731,384.56/129,281.20 - Step 6: Final answer
x = 141,433.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.